Require that ndigits > 0

Author: skirpichev

peps/pep-0757.rst

@@ -182,8 +182,8 @@ create a Python :class:`int` object from a digits array.
 
    *negative* is ``1`` if the number is negative, or ``0`` otherwise.
 
-   *ndigits* is the number of digits in the *digits* array. It must be
-   greater than or equal to 0.
+   *ndigits* is the number of digits in the *digits* array.  It must be
+   greater than 0.
 
    The caller can either initialize the array of digits *digits* and then
    either call :c:func:`PyLongWriter_Finish` to get a Python :class:`int` or